Finowl for Fintech
Breach checks and responsible name insights for fintech
Fintech accounts hold money, payment methods and identity documents, which makes them a favorite target for credential stuffing. Attackers replay email and password pairs leaked from unrelated sites, hoping a customer reused them on your app. Finowl gives your onboarding and authentication services two simple POST endpoints that reveal whether an email appears in known breaches and whether a password has been seen in breach data, so you can step up checks before money moves.
Growth and product teams in fintech also want to understand who their audience is without adding more fields to a regulated onboarding flow. The Finowl gender API estimates how a first name is typically used, which works well for aggregate reporting and campaign planning. It is deliberately not a tool for credit, pricing or eligibility decisions, and our guidance keeps it out of anything that affects a customer’s access to financial products.
WHAT TEAMS RUN INTO
Challenges in fintech
Credential stuffing against wallets
Bots test leaked email and password combinations at scale against login endpoints, and a single reused password can expose stored cards, balances and linked bank accounts.
Account recovery abuse
Fraudsters who control an old breached inbox can trigger password resets and talk support agents into changing contact details, so recovery flows need extra context before approving changes.
Weak passwords at onboarding
Customers often pick a password they already use elsewhere. Accepting one that already circulates in breach data hands attackers a head start on day one of the relationship.
Fair use of demographic data
Financial services face close scrutiny on discrimination, so any inferred attribute must stay away from underwriting, limits and pricing and be limited to aggregate, low-stakes analysis.
HOW FINOWL HELPS
Three APIs, one integration

Email breach checks for fintech signups and logins
When a customer signs in from a new device or asks to change a payout account, knowing that their email address shows up in several breaches is a useful risk signal. The Finowl email breach API returns each breach with its date and the data classes exposed, such as passwords or phone numbers, so your risk engine can weigh how likely it is that credentials were leaked alongside the address.

Breached password checks for fintech accounts
Credential stuffing works because people reuse passwords. If a customer sets a password that already appears in breach data, attackers may try it against your login long before anyone notices. The Finowl password breach API tells you whether a password has been seen and how many times, so your signup and password-change forms can reject known-compromised choices in line with NIST SP 800-63B guidance.

Gender analytics from names for fintech audiences
Fintech marketing and research teams often want to know whether a savings campaign or investing feature reaches a balanced audience. The Finowl gender API estimates how a first name is typically used, with a confidence score and the evidence behind it, so analysts can build aggregate dashboards without asking every customer another question during a regulated onboarding flow.
A FEW GOOD QUESTIONS
Fintech questions
Other industries
Build for fintech today
100 free credits every month. Test every endpoint in the sandbox before you write a line of code.